User manual

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3.7 Sub-Menu tree for DIAGNOSTIC
3.7.1. Loopback function
SYSTEM DIAGNOSTIC Î DIAG LOOPBACK
Note : there is no SYSTEM DIAGNOSTIC menu on the Ethernet Interface Model
If the device hasn’t connected or it is under handshake, it will not support farend line, farend payload and V.54.
Stand alone NTU, no connection with other NTU:
E1/T1 interface
CO side
Serial interface
CO side
Local digital Local digital
Local Local
Remote line Remote line
Remote payload
Remote payload
E1 /T1interface
CPE side
Serial interface
CPE side
Local digital Local digital
Remote line Remote line
Remote payload
Remote payload
After connection both CO side and CPE side:
E1/T1 interface
CO side
Serial interface
CO side
Local digital Local digital
Local Local
Remote line Remote line
Remote payload Remote payload
Farend line Farend line
Farend payload
Farend payload
V.54
E1/T1 interface
CPE side
Serial interface
CPE side
Local digital Local digital
Remote line Remote line
Remote payload Remote payload
Farend line Farend line
Farend payload
Farend payload
V.54